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9. INSTALLATION 

Flush mount 
fixture 

20-007-
2401 

100-183-190 2 

Hexagon- 
head bolt 

M6X12 
SUS304 

000-862-127 2 

Wing bolt 

M4X30 
YBSC2 
MBN12 

000-804-799 4 

Wing nut 

M4 
YBSC2 
MBN12 

000-863-306 4 

Spring 
washer 

M6 
SUS304 

000-864-260 2 

1.  Using the template (supplied), cut out a 

hole (92(H)X167(W)) in the mounting 
location. 

2.  Fix the two flush mount fixtures to the 

display unit with hexagon-head bolts and 
spring washers. 

3.  Screw in wing nut in wing bolt. 
4.  Set the display unit to the mounting 

location and fix it with wing bolts and wing 
nuts from the rear side. 

 
 

Install the antenna unit referring to the 
antenna installation diagram at the end of this 
manual. When choosing a mounting location 
for the antenna unit, keep in mind the 
following points: 

• 

Do not shorten the antenna cable. 

• 

The antenna unit can be installed three 
ways: screwed into a pipe (local supply), 
fixed to a post with the optional mast 
mounting kit, or screwed into an optional 
mounting base. For fixing by post or pipe, it 
is recommended to use stays to secure the 
post or pipe to prevent damage to the GPS 
receiver by vibration. 

• 

Choose a location out of the radar beam. 
The radar beam will obstruct or prevent 
reception of the GPS signal. 

• 

The location should be well away from a 
VHF/UHF antenna. A GPS receiver is 
interfered by a harmonic wave of a 
VHF/UHF antenna. 

• 

There should be no interfering object within 
the line-of-sight to the satellites. Objects 
within line-of-sight to a satellite, for 
example, a mast, may block reception or 
prolong acquisition time. 

• 

Mount the antenna unit as high as possible 
to keep it free of interfering objects and 
water spray, which can interrupt reception 
of GPS satellite signal if the water freezes. 

• 

See the outline drawing for the antenna 
unit at the back of this manual for minimum 
separation distances from other antennas. 

• 

If the antenna cable is to be passed 
through a hole which is not large enough to 
pass the connector, you may unfasten the 
connector with a needle nose pliers and 
3/8-inch open-end wrench. Refasten it as 
shown below, after running the cable 
through the hole. 

Pin

Nut

Connector

Gasket (reddish-brown)

Spring
Washer

Shield